Open AccessThe formation of vertical Bloch line in the garnet bubble films subjected to pulsed bias field
Author(s) -
Hu Yun-Zhi,
Hui Sun
Publication year - 2008
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.57.5256
Subject(s) - clockwise , dumbbell , bubble , pulse (music) , field (mathematics) , biasing , physics , optics , materials science , magnetic field , condensed matter physics , voltage , mechanics , mathematics , amplitude , quantum mechanics , detector , pure mathematics , medicine , physical therapy
We studied experimentally the dynamic characteristics of hard domains produced in the garnet bubble films at different pulse widths. The results show that the dumbbell domains contracted from multi-branched domains at zero static bias field rotate clockwise independent of the pulse width of the pulsed bias field in which the multi-branched domains were produced. In the direct current fixed bias fields soft domain segments harden and become dumbbell domains. How the dumbbell domains rotate is dependent on the pulse widths of the hardening pulsed bias field applied in the experiment. The results show that all the dumbbell domains rotate anticlockwise when the pulse width is narrow and they rotate clockwise and anticlockwise simultaneously and then they all rotate clockwise as the width of hardening pulse becomes wider and wider. It reveals that the direct current bias field and pulsed bias field have great influence on the types of vertical Bloch line in the garnet bubble films.